<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ name: 'home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片 -->
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 角色展示 -->
      <el-table :data="rolesList" border height="500px">
        <el-table-column label="明细" type="expand">
          <template slot-scope="scope">
            <div style="padding: 0px 48px">
              <!-- 一级权限 -->
              <el-row v-for="(item1, i1) in scope.row.children" :key="item1.id" :class="{ bdbottom: true, bdtop: i1 == 0, vcenter: true }">
                <el-col :span="5">
                  <el-tag closable @close="removeRightById(scope.row, item1.id)">
                    {{ item1.authName }}
                  </el-tag>
                  <i class="el-icon-caret-right"></i>
                </el-col>
                <!-- 二级权限 -->
                <el-col :span="19">
                  <el-row v-for="(item2, i2) in item1.children" :key="item2.id" :class="{ bdtop: i2 != 0, vcenter: true }">
                    <el-col :span="6">
                      <el-tag type="success" closable @close="removeRightById(scope.row, item2.id)">
                        {{ item2.authName }}
                      </el-tag>
                      <i class="el-icon-caret-right"></i>
                    </el-col>
                    <el-col :span="18">
                      <el-tag type="warning" closable v-for="(item3, i3) in item2.children" :key="item3.id" @close="removeRightById(scope.row, item3.id)">
                        {{ item3.authName }}
                      </el-tag>
                    </el-col>
                  </el-row>
                </el-col>
              </el-row>
            </div>
          </template>
        </el-table-column>
        <el-table-column label="序号" type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)">编辑角色</el-button>
            <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeRoleById(scope.row.id)">删除角色</el-button>
            <el-button size="mini" type="warning" icon="el-icon-setting" @click="showRightDialog(scope.row)">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 添加角色对话框 -->
    <el-dialog title="添加角色" :visible.sync="addDialogVisible" width="50%" @close="addRoleClosed">
      <el-form :model="addForm" :rules="addFormrules" ref="addFormRef" label-width="80px">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRole">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 编辑角色对话框 -->
    <el-dialog title="修改角色" :visible.sync="editDialogVisible" width="50%" @close="editRoleClosed">
      <el-form :model="editForm" :rules="editFormrules" ref="editFormRef" label-width="80px">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRole">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配权限对话框 -->
    <el-dialog title="分配权限" :visible.sync="rightDialogVisible" width="50%" @close="rightRoleClosed">
      <el-tree ref="treeRef" :data="rightsList" :props="treeProps" node-key="id" show-checkbox default-expand-all :default-checked-keys="defaultKeys"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="rightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="rightRole">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      rolesList: [],
      addDialogVisible: false,
      addForm: {
        roleName: "",
        roleDesc: "",
      },
      addFormrules: {
        roleName: [{ required: true, message: "请输入权限名称", trigger: "blur" }],
        roleDesc: [{ required: true, message: "请输入权限描述", trigger: "blur" }],
      },
      editDialogVisible: false,
      editForm: {},
      editFormrules: {
        roleName: [{ required: true, message: "请输入权限名称", trigger: "blur" }],
        roleDesc: [{ required: true, message: "请输入权限描述", trigger: "blur" }],
      },
      rightDialogVisible: false,
      rightsList: [],
      //树形组件绑定对象
      treeProps: {
        label: "authName",
        children: "children",
      },
      //默认选中的节点id值的数组
      defaultKeys: [],
      //当前要分配权限的角色ID
      roleId: "",
    };
  },
  created() {
    this.getRolesList();
  },
  methods: {
    // 获取角色列表
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status != 200) {
        return this.$message.error("获取角色失败");
      } else {
        this.rolesList = res.data;
      }
    },
    // 添加角色
    addRole() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) {
          return;
        }
        const { data: res } = await this.$http.post("roles", this.addForm);
        if (res.meta.status != 201) {
          return this.$message.error("添加角色失败");
        }
        this.addDialogVisible = false;
        this.getRolesList();
        this.$message.success("添加角色成功");
      });
    },
    //监听关闭事件
    addRoleClosed() {
      this.$refs.addFormRef.resetFields();
    },
    //编辑角色对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get(`roles/${id}`);
      if (res.meta.status != 200) {
        return this.$message.error("获取权限失败");
      }
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    // 编辑角色
    editRole() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) {
          return;
        }
        const { data: res } = await this.$http.put(`roles/${this.editForm.roleId}`, {
          roleName: this.editForm.roleName,
          roleDesc: this.editForm.roleDesc,
        });
        if (res.meta.status != 200) {
          return this.$message.error("修改权限失败");
        }
        this.editDialogVisible = false;
        this.getRolesList();
        this.$message.success("修改权限成功");
      });
    },
    //编辑角色关闭清空数据
    editRoleClosed() {
      this.$refs.editFormRef.resetFields();
    },
    //删除角色
    removeRoleById(id) {
      this.$confirm("是否要删除该角色", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(async () => {
          const { data: res } = await this.$http.delete(`roles/${id}`);
          if (res.meta.status != 200) {
            return this.$message.error("获取失败");
          }
          this.getRolesList();
          this.$message.success("删除角色成功");
        })
        .catch(() => {
          this.$message.info("已取消删除");
        });
    },
    //删除权限
    removeRightById(role, rightId) {
      this.$confirm("是否要删除该权限", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(async () => {
          const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`);
          if (res.meta.status != 200) {
            return this.$message.error("删除权限失败");
          }
          role.children = res.data;
          this.$message.success("删除权限成功");
        })
        .catch(() => {
          this.$message.info("已取消删除");
        });
    },
    //分配权限
    async rightRole() {
      const keys = this.$refs.treeRef.getCheckedKeys().concat(this.$refs.treeRef.getHalfCheckedKeys());
      const idStr = keys.join(",");
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr });
      if (res.meta.status != 200) {
        return this.$message.error("分配权限失败");
      }
      this.rightDialogVisible = false;
      this.getRolesList();
      this.$message.success("分配权限成功");
    },
    //分配权限关闭
    rightRoleClosed() {
      this.defaultKeys = [];
    },
    //显示分配权限对话框
    async showRightDialog(role) {
      const { data: res } = await this.$http.get(`rights/tree`);
      if (res.meta.status != 200) {
        return this.$message.error("获取权限列表失败");
      }
      this.rightsList = res.data;
      //获取角色下三级权限ID
      this.getLeafKeys(role);
      //存储当前要分配权限的角色ID
      this.roleId = role.id;
      this.rightDialogVisible = true;
    },
    // 获取角色下所有三级权限ID
    getLeafKeys(node) {
      if (!node.children) {
        return this.defaultKeys.push(node.id);
      } else {
        node.children.forEach((item) => {
          this.getLeafKeys(item);
        });
      }
    },
  },
};
</script>

<style lang="less" scoped>
.el-row {
  padding: 0;
}
.el-tag {
  margin: 6px;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.bdtop {
  border-top: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
